Mold for forming roller-bearing cages.



c. A... HEINZELMAN. MOLD FOR FORMING ROLLER BEARING CAGES.

APPLICATION FILED NOV, 19, 1910.

Patented May 30, 1911.

-' 2 SHEETS-BHEBT l.

java/282111 UNITED STATES PATENT OFFICE.

CHESTER A. HEINZELMLN, 0F BELLEVILLE, ILLINOIS.

MOLD FOR FORMING ROLLER-BEARING CAGES.

\ f Specification of Letters Patent.

Application fllcdNovcmber 19,1910. Serial No. 593,209.

To all whom it may concern:

Be it known that I, Crmsrnn- A. Hnmznn- MAN, a citizen of the United States, residing at Belleville, Illinois, have invented a cer-' tain new and useful Improvement in Molds for Forming Roller-Bearing Cages, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it' appertains to make and use the same. v

This invention relates to molds such as are used in the operation of forming cast metal articles. 4

The object of the invention is to provide a mold-of novel construction for forming a roller-bearing ca e which consists of an aproximately tubudar-shaped cast metal member provided with longitudinall extending openings'or pockets in which ro lers are arr3111" ed. f h d A 1 e 1 o t e rawings is a perspective view d i the cage which my mold produces; Fi ."2 is a vertical sectional view of the mo d; Fig. 3 is a horizontal sectional view taken on approximately the line 33 of Fig. 2; and Fig. 4 is a perspective view showmg the various parts of the mold separated.

The cage A which my improved mold produces, consists of a tapered tubularsha ed 'member' provided with longitudina y extending openings or pockets 1 for receivin rollers, not shown, the side edges 1 of sai pockets beingbeveled inwardly so as to provide tapered seats for the rollers.

The mold is composed-of a number of parts which are so designed that when they are assembled, as shown in Fi 2, a space corres onding to the shape of t e cage A is form for. receiving the molten metal that is poured into the mold.-

The bottom member of the mold consists of two parts, namely, 'a late 2' rovided on itsupper. side with a dis -'shape boss 3 and a vertically disposed annular flan e 4 and a removable ring'5 arran ed insitia of saidflange' and spaced away t erefrom to form an annular recess for the metal, The top member of themold also consists of two parts, a plate 6 provided on its under side with, an annular flange 7 and a removable circular plate 8' which is adapted to be arranged inside of said flange, the diameter of the plate 8 being less than the diameter of the flange 7 so as to forman annular recess for the metal. The middle member of the mold fits between the top and bottom members previously described, and said middle member consists of the following parts, a part 9 provided with two cylindrical-shaped guides 10 and 11 which project through openings in the top and bottom members of the mold, respectively, an annular-shaped part 12 which surrounds the part 9, and a plurality of cylindrical-shaped devices 13 that fit in cooperating grooves 14 and 15 on the inner surface ofthe part 12 and in the periphery of the part 9, as shown clearly in The peripheral edge 3" of the disk-shaped portion 3 on the bottom member of the mold is tapered upwardly and the inner edge 5 of cage A which I have designatedby the reference character 1} in Fig. 1. The peripheral edge 8 of the plate 8 and the inner face 7 a of the flange 7 on the top member of the mold are tapered at the same angle as the'surfaces 3 and 5* of the bottom member so as to form the portion of the cage designated by the reference character 1 in Fig. 1.

The codperating surfaces 9 and 12 on the parts 9 and 12 of the middle member of the mold form the portion 1 of the cage A which lie between the rollerreceiving openmgs 1 1n the cage, and said surfaces are, of

course, beveled at the same angle as the molding surfaces of the top and bottom members of the mold, the roller-receiving openingsl in the cage being formed by the cylindrical-shaped devices 13 which arearran ed between the parts 9 and 12 of the mi dle member, said parts 9 and 12 and devices 13 cobperating with each other to form.

anumber of slots which communicate with the annular recesses in the top and bottom members of the mold. The ends of the devices 13 are square and'the top and bottom members of the mold are so formed that they will securely clamp said devices'in position when the mold assembled, the top and bottomrfaces of the parts 9 and 12 ofthe mil -dle member being inclined upwardly from the vertical axis of the -.mold'-so that fthey will lie fiush'with the upner'and lower ends of the devices 13, and the surface's'of the top and. bottom membersof the mold which bear on saidpafls 9 and 12 being inclined at the same angle.

19. themanner shown in Fig. 2, and, the molten apart easily, and as the; the part 9 of the-middle member hold the Imetal is then poured into at-he hole-l6 in the plate 6 of the top. member, said-molten metal flowing nto the s aces between the various parts oi the mol and thus forming a ta pared cylindrical-shaped cage providedwith ngitudinally exten ing roller pockets or gpenings, as shown inFig. 1., The. cage can be removed easily as the.- various parts of the mold are so. formed that they can be taken guides'lO and 11 on top and bottom members in, alinement, it is a very simple matter to assemble the mold preparatory to ouring themetal.

-Having thus clescribedmy invention, what I claim as new and desire to secure byrLetters Patent is:

. 1. A mold for forming a one-piece cylin-- drical-shaped cage provided with roller-retom member that has an annular-shaped recess,- atop member that has an annularshaped recess, and. a middle member having anumber of spaced slots that communicate with said recesses. a

3; A mold for forming a one-piece cylin-.

drical-shaped cage provided with longitudinally extending roller-receiving pockets, said mold comprising a. bottom member which consists of separable parts thatcoiiperate with each other. to. form an annularsha-ped; recess, .a top member consisting of separable parts that coiiperate with each or to form an annularqrecess, and a sepa rable middle member havmg a number of longitudinally extending-slots that comma nicate withthe recesses msaid top and hottom'member. a 4. A mold for forming a one-piece cylindrical-shaped cage rovided with longitudinally extending ro ler pockets, said mold comprising a bottom member that consists of a plate provided on its upper side with a Themembers of the mold are assembled in cylindricale boss, an annular-shaped ii-tinge surroun ing said boss and a ring arranged inside of said flange andjspaced away from said boss so as to form an annular recess, a top-member which consists of a plate provided on its under side with an annular flange and aremovable disk-shaped part ar--.

ranged inside of: said flange and spaeedaway from same so as to form an annular recess, and a middle member cons stmg of an inner part, an outer part and a pluralit "of cylindrical-shapeddevices :;1;1 t r ose between said parts.

5. ,A mold .for the described, com

prising a; middle member which consists of an outer part. and an inner part provided mounted on said guides and each consisting ofa plurality of separable parts.

6. A mold for the purpose described, com

with guidcs,' and top and bottom members,

prising. top. and bottom members provided withannular recesses and-a middle member that consists of a substantially disk-shaped part provided on its periphery with longitudmal y extending recessesf a ring-shaped part provided on its inner side with longi tudinally eitending recesses, and a plurality of cylindrical-shaped devices arranged between said parts in said longitudinally extending recesses.

7. A mold for drical-shaped cast metal cage provided with roller-rece ving pockets, said mold consisting of top and bottommembers provided with tapered annular-shaped recesses, and.

a middle member provided with-a plurality of spaced slots which'communica'te with said recesses.

8. A mold forforming a taperedcylindrical shaped cast metal cage provided with roller-receiving? pockets, said mold 'consist'- ing of a top member, a bottom member, and a middle member, each of said members being composed of a plurality-of separable parts an the middle. member comprising a plurality ofcylindrical-shaped devices which form the roller pocketsinthe cageij 9. A mold for joining a taperedcylindrical-shaped cast metalcage provided with roller-receiving pockets, said mold being composed of a bottom plateprovided'on its upper side with a diskkshape'd projection formiiig. a tapered cylinand an annular flangegairemovable ring arranged inside of said flange, and" provided with a. beveled ed e that cooperates'with a beveled elge on sa d disk-shaped portion,'-a top plate provided on itsuiider side with a flange whose inner .face is-beveled, a'dislzshaped'partarranged inside of said flange and provided with a gbeveled edge, a' middle" disk arranged between said disk-shaped pm and disk-ska ed portion and provided on its peripheral e ge with longitudinall extending grooves, guides on said mi die. 61 K which pass through openings said to and bottoin'plates, ring silrrounding said midsignature in the presence of two witnesses,

dle disk and provided on its inner side with thi sfourteenth day of November 1910.

cooperating recesses, and cylindrical-shaped devices arranged in said recesses and confined in position by said top and bottom plates.

In testimony whereof I hereunto aflix my CHESTER A. HEINZELMAN.

Witnesses:

WELLS L. CHURCH, GEORGE BAKEWELL. 

